VIL: Lesson - Perfect System of Esse

Perfect System of Esse

The irregular verb sum, esse, fui, futurus (to be) can be formed in the perfect, pluperfect or future perfect tenses. Unlike its present system forms, the perfect system is formed just like every other verb: use the perfect stem (3rd PP - i) and add the tense endings. Reminder: every Latin verb forms its perfect system in the same way, even the most irregular verbs!

  • sum, esse, fui, (futurus) - to be
    • Perfect stem: fui - i = fu-

Perfect Tense

Endings: i, isti, it, imus, istis, erunt

Perfect Tense
Person Singular Plural
1st Person fui fuimus
2nd Person fuisti fuistis
3rd Person fuit fuerunt

Translation:

  • fui - I have been
  • fuisti - You have been
  • fuit - He/She/It has been
  • fuimus - We have been
  • fuistis - You (plural) have been
  • fuerunt - They have been

Pluperfect Tense

Endings: eram, eras, erat, eramus, eratis, erant

Pluperfect Tense
Person Singular Plural
1st Person fueram fueramus
2nd Person fueras fueratis
3rd Person fuerat fuerant

Translation:

  • fueram - I had been
  • fueras - You had been
  • fuerat - He/She/It had been
  • fueramus - We had been
  • fueratis - You (plural) had been
  • fuerant - They had been

Future Perfect Tense

Endings: ero, eris, erit, erimus, eritis, erint

Future Perfect Tense
Person Singular Plural
1st Person fuero fuerimus
2nd Person fueris fueritis
3rd Person fuerit fuerint

Translation:

  • fuero - I will have been
  • fueris - You will have been
  • fuerit - He/She/It will have been
  • fuerimus - We will have been
  • fueritis - You (plural) will have been
  • fuerint - They will have been

Practice Activity